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Answer» Following are differences between HDFS and NAS
- In HDFS Data Blocks are distributed across local DRIVES of all machines in a CLUSTER. Whereas in NAS data is stored on dedicated HARDWARE.
- HDFS is designed to work with MapReduce System, since computation is moved to data. NAS is not suitable for MapReduce since data is stored separately from the computations.
- HDFS runs on a cluster of machines and provides redundancy using replication protocol. Whereas NAS is provided by a single machine therefore does not PROVIDE data redundancy.
Following are differences between HDFS and NAS
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